• Title/Summary/Keyword: 치조골 성장

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AN ANALYSIS OF THE GROWTH PATTERN OF MAXILLARY ALVEOLAR BONE OF THE KOREAN GIRLS (한국인 여학생 상악 치조골의 성장 양상 분석)

  • Park, Soo-Jin;Lee, Seung-Pyo;Lee, Yoo-Mee;Kim, Jung-Wook;Kim, Chong-Chul
    • Journal of the korean academy of Pediatric Dentistry
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    • v.38 no.2
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    • pp.161-169
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    • 2011
  • Longitudinal serial cephalometric films in the every second year from fifty girls were used for the analysis of growth pattern of maxillary alveolar bone (MAE). Six parameters regarding MAB height were measured and were compared with stature and chronological age. Descriptive analysis. correlation coefficient test and linear regression analysis were done for the statistical analyses. 1. The height of MAE increased until 14 years although growth velocity was gradually decreased. which was different with stature growth pattern. 2. The correlation coefficients between chronological age and MAB height were high and had no statistical differences with those of stature and MAB height. In addition. the correlation coefficients between chronological age groups within each parameter of MAB were very high. 3. The growth amount of MAB could be predicted using linear regression analysis on the basis of chronological age data. The growth pattern between MAE and statue was quite different because of the growth pattern difference between skeletal and neuronal system. Therefore. growth pattern of Korean MAB must be considered in dental treatment of youth. Also. close relationship between chronological age and MAB height would be useful when clinicians want to predict growth amount of MAE for the dental implant treatment.

A study on the change of alveolar crest height following orthodontic treatment (교정치료와 관련된 치조골 높이 변화에 대한 연구)

  • Kang, Kyung-Hwa;Lee, Kyung-Won;Kim, Sang-Cheol
    • The korean journal of orthodontics
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    • v.30 no.5 s.82
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    • pp.599-611
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    • 2000
  • Alveolar crest is the section of interproximal alveolar bone which includes the free edge of the alveolar process. An increase of the normal forces within limits of tolerance leads to deposition of new bone. If forces are beyond the limits of tolerance, resorption of bone will result whether the force produces pressure or tension. This study was designed to evaluate changes of alveolar bone levels in mesial and distal surface of the left, right first molar, by using pre-treatment, post-treatment panorama films. Two hundreds sixteen subjects were divided into adolescent group of 104 subjects and adult group of 112 subjects, to which orthodontic treatment with a bicuspid extraction (adolescent group-50 subjects, adult group-50 subjects) or without a nonextraction (adolescent group-54 !subjects, adult group-62 subjects) was applied by fixed appliances. Pre- and post-treatment Panorama films were traced, and alveolar crest height was measured. Amounts of changes in alveolar crest height by treatment were calculated md compared in terms of side of tooth, extraction, age. The results were as follows ; 1. When pre-treatment alveolar crest bone levels were compared, levels of adult group were significantly lower than those of adolescent group. 2. Post-treatment alveolar crest bone levels were significantly lower than pre-treatment levels. 3. When changes of alveolar crest height were compared, between adolescent and adult group were not significantly. 4. When changes of alveolar crest height were compared, significantly larger changes were noticed in ex윤action than nonextraction cases. 5. When changes of alveolar crest height were compared, significantly larger changes were noticed in maxilla than mandible. 6. When mesio-distally compared, significantly larger changes were observed in the distal than mesial sides of adult group.

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3-Dimensional Analysis of Alveolar Molding Effect of Presurgical Nasoalveolar Molding Appliance and Lip Pressure After Cheiloplasty in Complete Unilateral Cleft Lip and Palate Patients (편측성 구순구개열 환자의 술전 비치조 정형장치와 구순 봉합수술의 치조골 정형효과의 3차원 분석)

  • Kim Na-Young;Kwon Sun-Man;Baek Seung-Hak
    • Korean Journal of Cleft Lip And Palate
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    • v.7 no.2
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    • pp.93-106
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    • 2004
  • 본 연구의 목적은 편측성 구순구개열 (UCLP) 환자에서 술전 비치조 정형장치 (presurgical nasoalveolar molding appliance, PNAM) 와 구순 봉합수술의 치조골 정형효과를 3차원 (3-D) 분석을 통하여 평가하는 것이다. 연구대상은 16명의 UCLP 환자 (평균 파열부거리: 10.46mm) 이며 PNAM 장치에 의한 치료와 rotation-advancement법에 의한 구순 봉합수술을 받았다 처음 내원시 (평균연령: $37.0{\pm}27.89$ 일), PNAM 치료를 받고 난 후이며 구순봉합수술 1달 전 (평균연령: $119.25{\pm}40.18$ 일), 구순봉합수술 2달 후 (평균연령: $190.81{\pm}42.78$ 일)에 상악의 인상을 채득하였다. 그 후 laser scanning machine (Orapix, Dimennex, Seoul, Korea) 과 3-D view software (3Dxer, Dimennex) 를 사용하여 3-D모형을 제작하였다. 선, 각도, 정중선변이, 거리, 면적 항목을 3-D 모형상에서 계측하고, 각 시기별의 차이를 비교하기 위하여 Wilcoxon signed rank test를 사용하여 분석하였다. PNAM치료 동안과 구순 봉합수술 후에도 치조골 후방부는 안정된 구조물이었다. PNAM치료에 의한 파열부 거리의 감소는 대분절 (greater segment) 의 내측 굴곡 (bending) 에 의하여 발생하였다. 대분절 (greater segment)의 전방 성장은 PNAM치료에 의하여 억제되었으나, 구순 봉합수술 후에 회복되었다. 구순 봉합수술 후에 대분절과 소분절 사이의 전방부 각도의 증가는 구순 반흔 (lip scar) 의 압력에 의한 치조골 정형 효과 때문으로 생각된다. 정중선변이는 PNAM치료에 의하여 개선되었다. PNAM치료 동안과 구순 봉합수술 후에 구개부 (palatal segment) 의 면적은 계속 증가하였다. 치조골 면적과 거리 항목의 증가는 후방부에서 크게 나타났다. 이러한 결과는 PNAM치료에 의한 치조골 정형효과는 주로 전방부에서 발생하며, 치조골의 성장은 구순 봉합수술 후에 후방부에서 주로 발생한다는 것을 의미한다.

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A Semilongitudinal Study on Cranial Base, Maxillary and Mandibular Growth of Korean Children Aging 7 to 17 Years Old (한국인 7-17세 아동의 두개저, 상악, 하악의 성장에 관한 준종단적 연구)

  • Sohn, Byung-Wha;Kim, Hyung-Soon
    • The korean journal of orthodontics
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    • v.29 no.1 s.72
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    • pp.23-35
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    • 1999
  • Lateral cephalograms or 251 males md 286 females were taken and pubertal growth pattern or cranial base, maxillary and mandible of 7 to 17 years old Korean children was evaluated. 10 landmarks and 16 analytical measurements were evaluated. Analytical measurement and annual difference for each age group was calculated and tested for statistical significance. Analytical measurements were classified into three groups which were cranial base, maxillary and mandibular measurements and also classified into make and female measurements. Following results were achieved. 1. The circumpuberal growth spurt was earlier in Korean females than in males. 2. Cranial base, maxilla and mandible showed circumpuberal growth. The cranial base showed a relatively smaller amount of growth than the facial complex. 3. Middle and posterior cranial base length showed a floater increase than anterior cranial base length and circumpuberal growth spurt was also more definite. 4. the forward and downward growth or maxilla results from maxillary growht itself and transposition or the maxilla due to circumsutural growth aroud the maxilla. Ar-ANS and Ar-Pr which represent maxillary position relative to the cranial base showed more growth than ANS-PNS which represents maxillary bone growth. 5. mandible showed more vertical growth than horizontal growth but without significance. 6. Alveolar gwoth of maxilla and mandible show maximum growth rate of the time of permanent teeth eruption following loss of deciduous teeth . After this period alveolar growth shows a decreasing tendency.

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DECORONATION ON ANKYLOSED PERMANENT INCISOR AFTER DENTAL TRAUMA (외상으로 유착된 영구 전치에서의 치관 절제술)

  • Kang, Yu-Jin;Kim, Young-Jin;Kim, Hyun-Jung;Nam, Soon-Hyeun
    • Journal of the korean academy of Pediatric Dentistry
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    • v.37 no.2
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    • pp.252-259
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    • 2010
  • Trauma commonly leads to ankylosis for the tooth whose periodontal ligaments have been injured. In growing patients, an ankylosed tooth can disrupt alveolar development, resulting in infraocclusion of the affected tooth. Consequently, this causes aesthetic problems during adolescence, interferes with prosthetic treatment due to the inclination of adjacent teeth, and complicates orthodontic dental movement. When the infraoccluded ankylosed tooth is extracted, a considerable amount of alveolar bone is lost, especially in the maxillary anterior region. Moreover, depression of the thin buccal alveolar bone compromises aesthetic restoration. In order to prevent alveolar bone loss, the ankylosed tooth should be treated by decoronation. In the present study, the traumatically injured maxillary incisors of 9-year-old and 10-year-old patients that present infraocclusion accompanied by ankylosis were treated with decoronation procedures. Decoronation procedures were performed when the affected teeth were 2-3 mm below relatively to the adjacent teeth. Moreover, the patients were treated before they get to 16 years old considering the maximum growth peak of the korean adolescents. As the results, there are favorable clinical results associated not only with preservation of horizontal alveolar volume but also with increase in vertical alveolar height after decoronation in growing individuals.

Managements of ankylosed incisor occurred during adolescence using alveolar bone distraction osteogenesis and decoronation: case report (성장기에 발생한 유착치의 치조골 신장술과 치관 절제술을 이용한 심미적 개선 치험례)

  • Kwon, Eun-young;Son, Woo-Sung;Park, Soo-Byung;Kim, Seong-sik;Kim, Yong-il;Choi, Youn-kyung
    • Journal of Dental Rehabilitation and Applied Science
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    • v.33 no.2
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    • pp.143-153
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    • 2017
  • One of the common complications of dental injury is tooth ankylosis. Unlike adults, when tooth ankylosis occurs in the adolescents, ankylosis interfered the growth of the adjacent alveolar bone, resulting in the developmental failure of the alveolar bone and subsequent open bite. The most common treatment option for ankylosed tooth is extraction. However, when prognosis of ankylosed tooth after extraction is expected to be poor due to severity of infrapositioning or prosthetic replacement cannot be performed immediately, various treatment options should be considered. This report suggests multidisciplinary treatment that might bring functionally and esthetically favorable result included alveolar bone distraction osteogenesis and decoronation of ankylosed maxillary anterior tooth with orthodontic and prosthetic treatments.

MULTIPLE ANKYLOSIS ON MAXILLARY AND MANDIBULAR PRIMARY MOLARS WITHOUT PERMANENT SUCCESSOR (계승치의 결손을 동반한 상, 하악 유구치의 다발성 유착에 대한 증례보고)

  • Jung, Hwi-Hoon;Choi, Hyung-Jun;Kim, Seong-Oh;Choi, Byung-Jai;Lee, Jae-Ho
    • Journal of the korean academy of Pediatric Dentistry
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    • v.32 no.3
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    • pp.403-408
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    • 2005
  • Ankylosis is defined as a fusion of cementum or dentine with alveolar bone. Due to the loss of the periodontal ligament on the ankylotic area, the tooth is incapable of continued eruption and hence is unable to follow the normal vertical development of the neighboring teeth and alveolar process. A 6-year-old female was referred to the Dept. of Pediatric Dentistry for ankylosis of primary molars and congenital missing of permanent premolars on both jaws. She had neither specific past medical history nor trauma and infection history in oral and maxillofacial region. Radiographic finding is that the maxillary primary molars were the early onset of ankylosis and had fast root resorption rate. However the mandibular primary molars were ankylosed later and being resorbed slower than maxillary primary molars. The object of treating this case is to maintain the proper alveolar bone growth and retention of deciduous molars. The point of managing this case is as follows: Proper treatment (observation, restoration, or extraction) should be established after thorough consideration of the time of onset, the root resorption rate, progression of infraocclusion and the development of alveolar bone support. We should consider the timing of extraction of the ankylosed teeth without problem of neighbouring alveolar bone growth and tilting of adjacent teeth in the view of growth spurt. Early diagnosis is important to avoid many of the complications with infraoccluded primary molars.

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Treatment of ankylosed posterior teeth: Subluxation and Extrusion Method (골유착 대구치의 교정적 치험례)

  • Mun, Cheol-Hyeon
    • The Journal of the Korean dental association
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    • v.38 no.10 s.377
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    • pp.962-968
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    • 2000
  • 치조골과 백악질이 치근막에 의하여 경계되어지지 않고 직접 접촉된 상태인 골유착치는 치조골성장장애, 불안전 맹출, 대합치의 정출, 인접치와의 불안정한 관계 등 다양한 문제를 야기한다. 골유착치의 진단은 방사선 사진에서 치근막의 소실, 타진시의 독특한 소리, periotest를 이용한 동요도 검사 등 다양한 방법이 사용되나 그 신뢰성은 높지 않은 편이다. 따라서 저자는 통산적인 방법은 견인을 시행한 후 견인여부를 평가하여 골유착 여부를 판단하는 임상적 진단법을 사용하고 있다. 골유착치의 치료는 subluxation & extrusion법, autotransplantation법, corticotomy법, segmental osteotomy법, ostectomy법등 다양한 방법이 제시되고 있다. Subluxation & extrusion법은 적용이 간편한 장점이 있으나 골유착의 재발로 인한 교정치료의 실패가능성이 높은 단점이 있다. 본 증례는 다수치의 부분맹출 및 골유착으로 인한 구치부 개방교합이 주소인 환자로 소구치는 통산적인 교정치료법으로 골유착된 대구치는 subluxation & extrusion법을 적용하여 양호한 치료 결과를 얻을 수 있었다.

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Histological Observations on Bone Healing with Bioactive Glass in Horizontal Ridge Augmentation;A Report of Four Cases (수평적 치조제증대술에 사용된 Bioactive glass의 골재생에 관한 조직학적 관찰;증례보고)

  • Park, Jin-Woo;Suh, Jo-Young
    • Journal of Periodontal and Implant Science
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    • v.36 no.3
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    • pp.601-611
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    • 2006
  • 임프란트 식립을 필요로 하는 환자의 수평적 치조제 결손의 증대를 위해 골유도재생술과 병용한 bioactive glass (BG) $(Biogran^{(R)})$ 이식의 골재생 양상을 각기 다른 치유기간을 부여한 4명의 환자에서 평가하였다. 6, 8, 10, 18개월의 치유기간 후 임프란트 식립부위에서 조직절편을 채득하여 골재생을 조직계측학적으로 평가하였다. 임프란트 식립을 위한 surgical reentry시 모든 이식부위는 임상적으로 명확한 수평적 치조제 폭경의 증가를 관찰할 수 있었다. 하지만 조직학적 분석결과 BG는 불량한 골전도성을 나타내었다. 6, 8개월의 치유기간후, 이식부위에서 신생골이 거의 관찰되지 않았으며(2.5%이하), 이식부와 기존 골의 경계부위에서 BG particle에 대한 신생골 성장과 결합양상 또는 관찰할 수 없었다. 10개월의 치유기간후 기존 골조직으로부터 성장한 신생골의 BG particle과의 직접적인 접촉양상을 일부 관찰할 수 있었다. 이식부는 13.2%의 광물화된 신생골조직을 보였고, 대부분의 BG particle은 결체조직으로 둘러싸여 있었다. 18개월의 치유기간이 부여된 환자의 조직절편에서 신생골은 이식부의 10.7%를 차지하여 비교적 낮은 신생골 형성양을 나타내었고, 이식부에 존재하는 잔존BG particle은 대부분은 결체조직으로, 일부분에서 광물화된 골조직으로 둘러싸여 있었다. 6, 8, 10, 18개월에서 잔존 BG particle양은 전체 이식부 면적에 대해서 각기 22.3%, 26.5%, 30.7%, 18.7%로 나타났다. 본 증례보고는 비록 한정적인 4명의 환자에서의 조직계측학적 평가결과이지만, 수평적 치조제 결손의 증대를 위해 골유도재생술과 병용한 bioactive glass이식은 불량한 골전도성으로 인해 효과적인 골재생을 위한 이식재로서는 적절하지 않을 수 있음을 나타낸다.

Presurgical Naso-Alveolar Molding Appliance for Unilateral Cleft Lip and Palate (편측성 순구개열 신생아 환자의 술전 비치조 정형장치)

  • Baek, Seung-Hak;Yang, Won-Sik;Kim, Sukwha
    • The korean journal of orthodontics
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    • v.28 no.6 s.71
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    • pp.905-914
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    • 1998
  • The goals of this study were to present presurgical naso-alveolar molding (PNAM) appliance in unilateral cleft lip and palate treatment and to evaluate the effects of PNAM appliance on alveolar molding. Samples were consisted of 4 unilateral cleft lip and palate infants (3 males and 1 female, mean age=23.2 days after birth) who were treated with PNAM appliances in Department of Orthodontics, Seoul National University Dental Hospital. Average alveolar cleft gap between the greater and lesser segment was 8.27mm and average duration of alveolar molding treatment was 9.7 weeks. These patients' models were obtained at initial visit (T1) and alter successful alveolar molding (T2). Seven linear and five angular variables were measured by using photometry and digital caliper. All statistical analyses were performed by SPSS win ver. 7.5 program. Paired t-test was used to compare the mean values. 1. The posterior part of alveolar segments are the stable structures during alveolar molding treatment period in infants. 2. Forward growth of the greater segment may be hindered by the action of alveolar molding. 3. The closure of cleft gap during alveolar molding were usually due to inward and backward bending of the anterior part of the greater segment and outward bending of the whole lesser segment.

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